Forage cutter knife holder



LA ROY DAHLERUP 2,830,413

FORAGE CUTTER KNIFE HOLDER A ril 15, 1958 Filed Nov. 23, 1.956

L bRoy Duh/amp 1N VENTOR- Uni ed States mean 2,830,413 non-AGE eu rrnnKNIFEHGLDER La Roy Dahlerup, Mission- Hill; S. Dak. A pnesaen- November"23, 1936; serial No; 6z3,s7's- 5. claims: (Ci. er -231'" This inventionrelates to devices for holding forage cutter knives while beingsharpened.

It is an object of the present invention to provide a forage cutterknife holder which will hold the forage cutter knife in place and at theproper angle for sharpening, making it possible for anyone to put a trueedge on the cutter knife.

It is another object of the present invention to provide a forage cutterknife holder of the above type which hollow grinds the knife providing'a keener and longer lasting edge, and wherein the grinding time is cutin half and the knife is moved back and forth so as to preventoverheating while grinding.

Other objects of the invention are to provide a forage cutter knifeholder bearing the above objects in mind which is of simpleconstruction, has a minimum number of parts, is inexpensive tomanufacture and elhcient in operation and use.

For other objects and for a better understanding of the invention,reference may be had to the following detailed description taken inconnection with the accompanying drawing, in which:

Figure 1 is a perspective view of a preferred embodiment of the presentinvention;

Fig. 2 is a vertical sectional view thereof taken along the line 2--2 ofFig. l;

Fig. 3 is a vertical sectional view taken along the line 33 of Fig. 2;and

Fig. 4 is a vertical sectional view taken along the line 4-4 of Fig. 3.

Referring now more in detail to the drawing, represents a U-shaped ironframe to the central portion of which is secured the mounting bracket 11by means of the nut and bolt assemblies 12 and by means of which thedevice is mounted on the emery wheel stand indicated generally at 13 bymeans of the nut and bolt assemblies 14, substantially as illustrated.

A pair of parallel, laterally spaced shafts. 15 are bolted at theiropposite ends to the ends of the frame 10 by means of the nuts 16 andexternally threaded portions provided on the ends of the shafts. Theangle iron bracket 11 may, of course, vary with the difierent types ofemery wheelstands. The shafts 15 serve as slides for the bushings orsleeves 17 which are fixedly connected at their endsto the transverseangle bar 18 at the vertical portion thereof, for example by means ofwelding, 19. The angle iron 18 is held at the desired positionlongitudinally of the shafts 15 by means of the externally threaded stud20 screw threaded therethrough and which is rotatably mounted at one endof the frame 10, the enlargements 21 and 22 being provided at the endsthereof. It will be noted that the angle bar 18 is provided with a pairof circular openings aligned with the bushings 18 and which slidablyreceive therethrough the.

shafts 15.

A transverse bushing or sleeve 23 is fixedly secured to the top of theangle bar 18, for example by means 2 of welding 24, and rotatably andslidably mounts therewithin' the transverse shaft 25. The ends of theshaft 25 are externally threaded and are secured to the rectangular endplates 26 by means of the nuts 27. The end plates 26 fixedly mounttherebetween, for example by means of welding, a transverse angle bar 28(Fig; 2) which supports the forage cutter knife 29 on-the hdri zontalportion thereof with the cutting thereof extending towards the emerywheel 30. It will be noted'that' the inner edge, of the knife 29 abutsthe vertical portion of the angle bar 28 (Fig. 4). The knife 29 isretained in position on the angle bar 28' by means of the bar'SI ofsubstantially square cro'ss" secti'onafid' whieh'is" attached to theangle bar by meansor the provision in" the lat ter of the verticallyelongated slots 32 and the bolts 33 which pass inwardly therethrough andwhich are screw threaded into the bar 31, thus permitting the verticaladjustment of the block 31 to accommodate knives of varying thickness.

A pair of L-shaped clamps 34 are welded or otherwise secured to thevertical portion of the angle bar 28 overhanging the bar 31 and mountingthe screw clamps or studs 35 having clamp feet 36 at their lower endsand handles 37 at their upper ends whereby to tighten the knife 29intermediate the angle bar 28 and block 31, as will be obvious.

A handle 38 is welded or otherwise secured to the end plate 26, While asecond handle 39 is welded or otherwise secured to the angle bar 28. Thehandles 38 and 39 are used to move the knife and holder back and forthand to apply pressure by the knife blade on the emery wheel 30, as shownin phantom in Fig. 2. Thus, the holder in operation may be adjustedlongitudinally of the shafts 15 by means of the screw 20, and the knifeblade 29 may be moved back and forth longitudinally of the shaft 25 bymeans of the shaft 25 and the bushing 23, the entire assembly beingrotatable about the horizontal axis of the shaft 25 to bring the cuttingedge of the knife into engagement with the emery wheel 30.

It will be noted that there has been provided a forage cutter knifeholder which will hold the forage cutter knife in place and at theproper angle for sharpening. It will also be apparent that the devicehollow grinds the knife, providing a keener and longer lasting edge. ItWill also be noted that by sliding the knife back and forth, it does notheat as much as if the knife were not laterally movable.

While various changes may be made in the detail construction, it shallbe understood that such changes shall be within the spirit and scopeofthe present invention as defined by the appended claims.

What I claim as new and desire to Patent of the United States is:

1. A forage cutter knife holder comprising a frame, a plurality oflaterally spaced, parallel shafts fixedly connected at their oppositeends to the ends of said protect by Letters frame, a plurality ofbushings slidable longitudinally" along said shafts, a transversesupport having a vertical portion fixedly connected to the ends of saidbushingsand having openings receiving said shafts therethrough bushing,a transverse knife support having horizontal portion and a verticalportion, means for fixedly connecting the ends of said knife support tothe ends of said transverse shaft to permit lateral sliding movement androtational movement about said transverse shaft, said' horizontalportion of said knife support supporting thereon a forage cutter knifefor movement into engagement: with an emery wheel, means for mountingsaid frame.

ing the forage cutter knife on said knife support.

2. A forage c'utter knife holder according to claim 1, said lastmentioned means comprising an elongated bar of substantiallyrectangularcross section adaptedto be positioned on the forage cutterknife in abutment with the vertical portion of said knife support, meansfor connecting said bar to said vertical portion to permit verticaladjustment and clamp mean-s fixedly carried by said vertical portionengaging said bar whereby to lock the forage cutter knifebetween saidbar and the horizontal portion of said knife support.

3. A forage cutter knife holder according to claim 2, said means forconnecting the ends of said knife support to the ends of said transverseshaft comprising a pair of end plates secured to the opposite ends ofsaid shaft at right angles thereto, the ends of said knife support beingsecured to the inner faces of said end plates.

4. A forage cutter knife holder according to claim 1, including anexternally threaded stud rotatablymounted in the end of said frame, saidstud extending inwardly and being screw threaded through said firstsupport, and enlargements at the opposite ends of said stud whereby uponrotational movement of the same, the longitudinal position of said firstsupport will be adjusted.

5. A forage cutter knife holder according to claim 4, including a firsthandle mounted on one of said end plates and a second handle mounted onthe vertical portion of said knife support at the other end thereofwhereby to facilitate the movement of the forage cutter knife laterallyand about the axis of said transverse s h aft.

References Cited in the file of this patent UNITED STATES PATENTS2,008,943 Bodey July 23, 1955 2,783,592 Chandler Mar. 5, 1957

